Questions & Answers
Browse all 15 questions from the
Fundamental Physics Concepts study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What fundamental force is responsible for holding the nucleus of an atom together, overcoming the electrostatic repulsion between protons?
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A
Gravitational Force
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B
Electromagnetic Force
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C
Weak Nuclear Force
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D
Strong Nuclear Force
2
According to the second law of thermodynamics, in any natural thermodynamic process, the total entropy of an isolated system:
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A
Always decreases
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B
Always increases or remains constant
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C
Always remains constant
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D
Can increase or decrease unpredictably
3
Which phenomenon explains why a prism separates white light into its constituent colors?
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A
Diffraction
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B
Interference
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C
Refraction
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D
Polarization
4
The photoelectric effect, explained by Albert Einstein, provides strong evidence for the particle nature of light, where light is described as:
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A
Waves with varying frequencies
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B
Electromagnetic waves with constant amplitude
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C
Discrete packets of energy called photons
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D
Continuous energy streams
5
In classical mechanics, Newton's first law of motion (the law of inertia) states that an object at rest will stay at rest and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by an external:
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A
Force
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B
Velocity
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C
Mass
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D
Acceleration
6
What is the phenomenon where a wave bends as it passes from one medium to another due to a change in speed?
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A
Reflection
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B
Diffraction
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C
Refraction
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D
Dispersion
7
According to Ampère's law, the magnetic field around a current-carrying wire is directly proportional to the:
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A
Resistance of the wire
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B
Voltage across the wire
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C
Current flowing through the wire
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D
Length of the wire
8
The uncertainty principle, formulated by Werner Heisenberg, states that it is impossible to simultaneously know with perfect accuracy both the position and the _______ of a particle.
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A
Charge
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B
Mass
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C
Energy
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D
Momentum
9
What is the unit of electric potential difference (voltage)?
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A
Ampere
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B
Ohm
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C
Watt
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D
Volt
10
The process by which energy is transferred through a vacuum, such as the heat from the Sun reaching Earth, is called:
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A
Conduction
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B
Convection
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C
Radiation
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D
Advection
11
Which fundamental constant relates the energy of a photon to its frequency?
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A
Boltzmann constant
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B
Planck constant
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C
Gravitational constant
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D
Speed of light
12
In special relativity, Einstein's famous equation E=mc² relates energy (E) to mass (m) and the speed of light (c). This implies that mass and energy are:
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A
Unrelated entities
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B
Completely different forms of the same fundamental substance
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C
Only interchangeable under extreme conditions
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D
Strictly conserved separately
13
What is the property of a material that opposes the flow of electric current?
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A
Conductivity
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B
Capacitance
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C
Inductance
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D
Resistance
14
The phenomenon where light waves bend around obstacles or spread out after passing through narrow openings is known as:
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A
Interference
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B
Diffraction
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C
Refraction
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D
Scattering
15
According to Archimedes' principle, the buoyant force on an object submerged in a fluid is equal to the weight of the _______ displaced by the object.
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A
Object
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B
Air
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C
Fluid
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D
Container
